C++ 20 Code Evolution Unlocked-C++20 Features Integration

Example

template<typename T> concept Addable = requires(T a, T b) { a + b; };

Scenario

Ensures that a generic function only accepts types that support the addition operation, improving type safety and reducing runtime errors in mathematical libraries or frameworks.

Example

auto evenNumbers = numbers | std::views::filter([](int n) { return n % 2 == 0; }) | std::views::transform([](int n) { return n * 2; });

Scenario

Simplifies the processing of collections by applying filters and transformations in a declarative manner, ideal for data analysis and processing pipelines in scientific computing or big data applications.

Example

std::future<int> asyncComputation() { co_return 42; }

Scenario

Facilitates non-blocking I/O operations and asynchronous task execution, crucial for developing high-performance web servers, databases, or UI applications requiring responsive multitasking.

Example

void processElements(std::span<int> elements) { for(auto& e : elements) { /* Process e */ } }

Scenario

Enables safer and more efficient manipulation of arrays and contiguous sequences without owning the data, beneficial in systems programming, embedded software, and performance-critical applications.